Wellbutrin Withdrawal: What to Do If You Stopped or Want to Stop

If you have stopped Wellbutrin (bupropion) or want to, talk to the prescriber before you change anything else. Stopping can bring irritability, anxiety, insomnia and vivid dreams, fatigue, headache, nausea, and mood changes, which usually begin within one to four days, peak in the first week, and ease over one to three weeks. Call 911 for a seizure or immediate danger, and call or text 988 for thoughts of self-harm.

Bupropion is sold as Wellbutrin, and was formerly sold as Zyban for smoking cessation (generic bupropion SR is still used for that). It is not a controlled substance and is not considered addictive when taken as prescribed. What happens when you stop is a physiological adjustment that clinicians call antidepressant discontinuation syndrome, not withdrawal from a drug of abuse. Across antidepressants in general, a 2024 meta-analysis estimated that about 1 in 6 or 7 people who stop develop discontinuation symptoms once placebo effects are accounted for; bupropion itself has been studied less. That is one more reason to plan the stop with the prescriber rather than stopping all at once.

What to do now

1. Call the prescriber's office. Say which product and strength you take (for example, XL or SR), when your last dose was, and why you stopped or want to stop. Those details decide what comes next.
2. Do not split, crush, or chew extended-release tablets to make a smaller dose. Bupropion carries a dose-related seizure risk, and a broken tablet can release the drug faster than intended.
3. If you are also stopping alcohol or a benzodiazepine, say so first. Bupropion is contraindicated for people who are abruptly stopping alcohol, benzodiazepines, barbiturates, or antiseizure medications, because seizure risk rises. Tell the prescriber, and any detox team, before either change. Our guides to alcohol withdrawal and benzodiazepine withdrawal explain why those two need medical supervision on their own.
4. Keep a symptom log with dates. It is the most useful thing you can bring to a follow-up appointment, and it helps separate an adjustment curve from returning depression.

Bupropion also carries a boxed warning: antidepressants raise the risk of suicidal thinking and behavior in children, adolescents, and young adults, and the label asks for close monitoring for worsening symptoms, which includes the period when a dose is being changed.

Is it withdrawal, or discontinuation?

Clinicians prefer "discontinuation syndrome" for antidepressants, and the distinction matters. Addiction involves craving, loss of control, and continued use despite harm. Discontinuation involves a nervous system that adapted to a medication over months and now has to readjust without it.

People still search for "Wellbutrin withdrawal," and the symptoms are real either way. But the label changes what the treatment is: this is a tapering problem for a prescriber, not a substance use disorder.

What are the symptoms of stopping Wellbutrin?

• Irritability, agitation, or a short fuse
• Anxiety or restlessness
• Sleep disruption: insomnia, or vivid and unsettling dreams
• Fatigue and low energy
• Headache
• Nausea or stomach upset
• Difficulty concentrating or mental fog
• Mood changes, including low mood or tearfulness
• Dizziness

Cigarette cravings deserve their own mention. For someone who used bupropion to quit smoking, stopping the medication can bring them back.

How long does Wellbutrin withdrawal last?

Symptoms typically begin within one to four days of stopping or sharply reducing the dose, often peak during the first week, and ease over the following one to three weeks.

Longer use and higher doses tend to mean a longer adjustment. Symptoms lasting well beyond a few weeks are worth a conversation with a prescriber rather than more patience, because at that point the more likely explanation is something other than discontinuation.

Is it discontinuation, or depression coming back?

The two can be mistaken for each other in both directions. Discontinuation symptoms tend to peak early and improve. If low mood, anxiety, or hopelessness returns and keeps building past the first couple of weeks, that is more likely the depression coming back than the medication leaving.

Returning depressive symptoms are the single most important reason not to stop an antidepressant without medical supervision. That log of symptoms and dates is what lets a prescriber tell the two apart.

Where bupropion sits among antidepressants

Bupropion works differently from SSRIs and SNRIs. Rather than acting on serotonin, it affects dopamine and norepinephrine, which is why it is less likely than SSRIs to cause sexual side effects or weight gain.

Discontinuation symptoms are best documented with serotonergic antidepressants. A 2024 meta-analysis found paroxetine and venlafaxine among the drugs associated with the most severe symptoms. Bupropion does not act on serotonin, and it has not been studied the same way, so the honest answer is that its discontinuation profile is less well characterized rather than proven milder. Individual experiences vary considerably.

Why tapering has to be a prescriber's call

There is no universal bupropion taper. For Wellbutrin XL at 300 mg, the FDA label advises stepping down to 150 mg before stopping; the rest depends on your situation. The schedule depends on the dose, the formulation, how long you have taken it, why you take it, what else you take, and how previous attempts went.

The extended-release tablets are engineered to release the drug slowly. Splitting, crushing, or chewing them defeats that engineering, which matters because of the dose-related seizure risk. If a smaller step is needed, the prescriber can change the formulation or the strength instead.

What helps during the adjustment

None of this replaces medical guidance; it makes the window more tolerable.

Protect sleep with a consistent schedule and less caffeine after midday, and resist the urge to use alcohol as a sleep aid. Alcohol also lowers the seizure threshold, which matters more with this medication than with most. Tell someone close to you what you are doing, since irritability is easier to weather when the people around you know why it is happening. If you have the luxury, time the change for a stretch without a major deadline or life event.

When substance use is part of the picture

Bupropion frequently shows up in behavioral health settings, prescribed for depression alongside a substance use disorder, or for smoking cessation during treatment for something else. That overlap creates two practical risks.

An unplanned stop during early recovery removes support for depression at a moment when depression is dangerous. And the seizure contraindication above applies to anyone planning to stop drinking or stop a benzodiazepine while taking bupropion. The label also advises keeping alcohol to a minimum or avoiding it.

If both a mental health condition and substance use are in play, the medication decisions and the substance use treatment should be coordinated rather than handled by two people who never speak. Our guide to integrated care for co-occurring disorders explains what that looks like, and the treatment options guide walks through the levels of care available. SAMHSA's National Helpline (1-800-662-4357) provides free, confidential referrals 24 hours a day.